27
B. deburring
 Useaknife,plasticpipedeburringtool,orfiletoremoveburrsfrom
theendof smalldiameterpipe. Besureto removeallburrs from
aroundtheinsideaswellastheoutsideofthepipe.Aslightchamfer
(bevel)ofabout10°-15°shouldbeaddedtotheendtopermiteasier
insertionofthepipeintotheendofthefitting.Failuretochamferthe
edgeofthepipemayremovecementfromthefittingsocket,causing
thejointtoleak.
step B
C. Test dry t of the joint
Taperedttingsocketsaredesignedsothataninterfacedtshould
occurwhenthepipeisinsertedabout1/3 to2/3ofthewayintothe
socket.Occasionally,whenpipettingdimensionsareatthetolerance
extremes,itwillbepossible tofullyinsertdry pipetothebottomof
thettingsocket.Whenthishappens,asufcientquantityofcement
mustbeappliedtothejointtollthegapbetweenthepipeandtting.
Thegapmustbelledtoobtainastrong,leak-freejoint.
d. Inspection, cleaning, priming
Visuallyinspectthe inside of the pipe and ttingsockets and
removealldirt,greaseormoisturewithacleandryrag.Ifwiping
failstoclean the surfaces, a che mical cleaner must be used.
Checkforpossibledamagesuchassplitsorcracksandreplace
if necessary.
depth-of-entry
 Markingthedepthofentryisawayto checkifthepipehas
reachedthebottomofthefittingsocketinStepF.Measure
thefittingdepthandmarkthisdistanceonthepipeO.D.You
maywanttoaddseveralinchestothedistanceandmakea
secondmarkastheprimerandcementwillmostlikelydestroy
your first one.
 Applyprimerto thesurfaceof thepipeand ttingsocketwith
anaturalbristlebrush. Thisprocesssoftensand preparesthe
PVCorCPVCforthesolventcementingstep.Movequicklyand
withouthesitationtothecementingprocedurewhilethesurfaces
arestillwetwithprimer.
e. application of solvent cement
• Applythe solventcementevenly andquicklyaround the
outsideofthepipeatawidthalittlegreaterthanthedepth
ofthettingsocket.
• Applyalightcoatofcementevenlyaroundtheinsideofthe
ttingsocket.Avoidpuddling.
• Applyasecondcoatofcementtothepipeend.
step e
f. joint assembly
 Workingquickly,insertthepipeintothettingsocketbottomand
givethepipeorttinga1/4turntoevenlydistributethecement.
Donotcontinuetorotatethepipeafterithashitthebottomofthe
ttingsocket.Agoodjointwillhavesufcientcementtomakea
beadallthewayaroundtheoutsideofthettinghub.Thetting
willhaveatendencyto slidebackwhilethecement isstillwet
soholdthejointtogetherforabout15seconds.
step f
G. cleanup and joint movement
 Removeallexcesscementfromaroundthepipeandttingwitha
drycottonrag.Thismustbedonewhilethecementisstillsoft.
 Thejointshouldnotbedisturbedimmediatelyafterthecementing
procedure,andsufcienttimeshouldbeallowedforpropercuring
ofthejoint. Exact drying time is difcult to predict because it
dependsonvariablessuchastemperature,humidityandcement
integrity.Formorespecicinformation,youshouldcontactyour
solventcementmanufacturer.
step G